Explain:"I wanted to get out and walk eastward...I was within and without, simultaneously enchanted and repelled by the inexhaustible variety of life".What might it mean?What might it be saying about Nick's character?

Nick didn't appreciate Tom's foray into the West and wanted to get away from the immortality and low morals it represented. He's there, and he's taking part...... but it doesn't mean he approves. He wants to move east in order to return to the East Egg.